Automatic air-brake-operating device.



No. 737,092. PATENTED AUG; 25, 1903.

A. H. FREEMAN.

' AUTOMATIGAIR BRAKEO PERATING DEVICE.

' ATPLIOATION FILED MAY 7, 1903;

N0 MODEL.

THE ucnms PETEns 00.. PNoTo-uma, WASHINGTON, n c.

UNITED STAT S Patented August 25, 1903.

ALFRED H.- FREEMAN, or oATAs UoUA, PENNSYLVANIA.

AUTOMATIC AlR-BRAKE-OPERATING DEVICE.

SPECIFICATION forming part Of Letters-Patent NO. 737,092, dated August25, 1903. Application filed May 7,1903 Serial No. 156,112- (No model.)

To all whom it may concern:

Be it known that I, ALFRED I-I. FREEMA a citizen of-the United States,residing at Oatasauqua,in the county of Lehigh and State ofPennsylvania, have invented certain new and useful Improvements inAutomatic Air- Brake-Operating Devices;' and' I do declare the followingtobe a full, clear, and exact description of the invention, such as willen: able others skilled in the art to which it appertains to make anduse the'same.

This invention relates to devices for automatically applying the brakeson a railwaytrain.

The object of the invention is to provide 7 means for automaticallyreleasing the air in the train-pipe to apply the brakes should theengineer fail to see the danger-signal or for any other reason shouldfail to operate his brake-valve.

Afurther object is to provide simple means which may be attached to anylocomotives, steam, or electric cars, which are controlled byair-brakes, said meansbeingadapted to be automatically operated byadanger-signal.

With these and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,as will be more fully described, and particularly pointed out in theappended claim. I

Figure 1 is a side elevation of the front end of a locomotive, showingthe application of the device. Fig. 2 is a top plan View of the same,showing the device about to be operated by the arm of a signal; and Fig.3 is an end elevation of the parts as shown in Fig. 2.-

In the drawings, 1 denotes a locomotive.

2 denotes the train-pipe. 3 denotes an airvalve, arranged in said pipeat a convenient place, but preferably near the forward end of thelocomotive.

4 denotes the stem of the valve, having a handle 4.

5 denotes a vertically-disposed shaftrotatably mounted on theforwardbolster or other suitable portion of the locomotive and suit-.

ably braced to the same. Near the lower end of the shaft is fixed alaterally-projecting crank-arm 6, the outer end of which is consignalarm or target swung into a position indicating danger.

In practice as the locomotive approaches an open switch or otherdangerous point for which a danger-signal has been set and the engineerdoes not see the signal or for any reason fails to operate his valve toapply brakes, the arm or plate 8 on the shaft 5 will engage the targetor other arm 9 on the signal, which will turn the shaft, causing thesame to open the valve 3 and release the air in the train-pipe, therebyapplying the brakes and stopping the train.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changesin the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent,'is-

An air-brake-operating device for locomotives and the like comprising arelease-valve having a stem and arranged in the train-pipe of saidlocomotive, a rot-atably-mounted shaft carried by said locomotive, acrank-arm fixed to said shaft, a link connectingsaid arm with the stemof said valve to open the same, a laterally-projecting arm or platecarried by said shaft and adapted to engage the arm or target of adanger-signal and rotate said shaft to open said valve, substantially asdescribed.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- DGSSGS.

ALFRED H. FREEMAN. Witnesses:

FOSTER MACADAM, D. P. STEM.

